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/***************************************************************************

    ESD 16 Bit Games

***************************************************************************/

#include "machine/eeprom.h"

class esd16_state : public driver_device
{
public:
	esd16_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag) ,
		m_vram_0(*this, "vram_0"),
		m_vram_1(*this, "vram_1"),
		m_scroll_0(*this, "scroll_0"),
		m_scroll_1(*this, "scroll_1"),
		m_spriteram(*this, "spriteram"),
		m_head_layersize(*this, "head_layersize"),
		m_headpanic_platform_x(*this, "platform_x"),
		m_headpanic_platform_y(*this, "platform_y")
	{
		m_tilemap0_color = 0;
		m_tilemap1_color = 0;
	}

	/* memory pointers */
	required_shared_ptr<UINT16> m_vram_0;
	required_shared_ptr<UINT16> m_vram_1;
	required_shared_ptr<UINT16> m_scroll_0;
	required_shared_ptr<UINT16> m_scroll_1;
	required_shared_ptr<UINT16> m_spriteram;
	required_shared_ptr<UINT16> m_head_layersize;
	required_shared_ptr<UINT16> m_headpanic_platform_x;
	required_shared_ptr<UINT16> m_headpanic_platform_y;
//  UINT16 *       m_paletteram;  // currently this uses generic palette handling

	/* video-related */
	tilemap_t       *m_tilemap_0_16x16;
	tilemap_t       *m_tilemap_1_16x16;
	tilemap_t       *m_tilemap_0;
	tilemap_t       *m_tilemap_1;
	int           m_tilemap0_color;
	int           m_tilemap1_color;

	/* devices */
	device_t *m_audio_cpu;
	eeprom_device *m_eeprom;
	DECLARE_WRITE16_MEMBER(esd16_sound_command_w);
	DECLARE_WRITE16_MEMBER(hedpanic_platform_w);
	DECLARE_READ16_MEMBER(esd_eeprom_r);
	DECLARE_WRITE16_MEMBER(esd_eeprom_w);
	DECLARE_WRITE8_MEMBER(esd16_sound_rombank_w);
	DECLARE_READ8_MEMBER(esd16_sound_command_r);
	DECLARE_WRITE16_MEMBER(esd16_vram_0_w);
	DECLARE_WRITE16_MEMBER(esd16_vram_1_w);
	DECLARE_WRITE16_MEMBER(esd16_tilemap0_color_w);
	DECLARE_WRITE16_MEMBER(esd16_tilemap0_color_jumppop_w);
	TILE_GET_INFO_MEMBER(get_tile_info_0);
	TILE_GET_INFO_MEMBER(get_tile_info_0_16x16);
	TILE_GET_INFO_MEMBER(get_tile_info_1);
	TILE_GET_INFO_MEMBER(get_tile_info_1_16x16);
};


/*----------- defined in video/esd16.c -----------*/


VIDEO_START( esd16 );
SCREEN_UPDATE_IND16( hedpanic );